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Phosphate rock fertilisers to enhance soil P status and P nutrition on organic cropping farms : a thesis presented in partial fulfilment of the requirements for the degree of Master of Plant Science at Massey University

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Academic year: 2020

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Figure

Table 1.1. Selected soil chemical properties of 14 paddocks of the East Coast Organic Producers Trust
Table 3.2. Physical and chemical properties of the <2mm sieved soil fraction used in the laboratory study
Figure 3.7. The relationship between fertiliser P application rate and B (asymptote) parameter values for the equation y = -B(1-Rx) describing the changes in Bic-P (y) over time (x) for various P application rates
Figure 3.8. Expected changes in Bic-P over time (DAFA; days after fertiliser application) for various rates of RPR, BioPhos (BioP) and BioSuper (BioS) under field conditions
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